Sierra InnovaMass 240i Series, Instruction Manual, Page: 24 / 115

24
To minimize the potential for water damage, Sierra Instruments recommends the following:

Install conduit seals near the enclosures on all ports.

Use a cable gland design that provides shielded cable termination and an environmental
seal against dirt and water.

Do not bend, kink, or otherwise distort the cable at the entry points to the cable glands.

Route conduit or cable using a drip loop or drain as close as possible to the enclosure
ports unless the cable slopes directly down.

If the factory cable glands are replaced to install other adapter fittings, conduit fittings,
cable glands, or any other modification to the cable entry points be sure to use a good
quality thread sealant on all NPT threads as well as verifying they are all tightened and
sealed appropriately so as not to leak.

Be certain to use NPT threads when connecting to the housing. Some electrical fittings
are not tapered but will fit in the NPT ports of the enclosure. Sufficient Teflon tape and
pipe dope is recommended to insure a leak tight seal.

If you are uncertain of the conditions the interior of the housing is subjected to over time,
a small temporary datalogger can be placed in the housing to record temperature and
humidity to establish a baseline. Corrective action can be made based on this data before
instrument degradation sets in. Contact Sierra Instruments for suggested sources of small
dataloggers.

Keep the enclosure lids sealed tight using the supplied o-rings.

As part of the lid o-ring inspections look for any signs of condensation inside of the
enclosure. If condensation or signs of condensation/corrosion are found be sure all
fittings/seals are securely tightened as well as a desiccant bag can be used and replaced as
needed. This can be particularly important if the temperature is cycled.